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Preparation method of organic fertilizer for reducing heavy metal lead in soil

A technology of heavy metals and organic fertilizers, applied in the direction of organic fertilizers, inorganic fertilizers, potash fertilizers, etc., can solve the problems of crop yield reduction, residues, and hidden dangers to health, and achieve the effects of low prices, reduced lead content, and increased yields

Inactive Publication Date: 2018-02-16
林良兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, heavy metal pollution in soil has become a problem that cannot be ignored. These heavy metal pollution will not only lead to crop yield reduction, but also remain in agricultural products, and then enter the human body, causing major hidden dangers to people's health

Method used

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  • Preparation method of organic fertilizer for reducing heavy metal lead in soil

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method for reducing the organic fertilizer of heavy metal lead in soil, comprising the steps of:

[0036] (1) At a temperature of 55°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the water content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0037] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0038] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 10mm, and then mixing them uniformly to form a mixture;

[0039] (3) Mix the mixture, manure, EM bacteria and water at a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 50°C for 32 hours to obtain the first raw material;

[0040] Then raise the temperature of the first raw material to 90°C, keep it warm for 10 minutes, and then cool down to 30°C;

[0041] (4) The first raw material and ...

Embodiment 2

[0051] A preparation method for reducing the organic fertilizer of heavy metal lead in soil, comprising the steps of:

[0052] (1) At a temperature of 60°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the moisture content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0053] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0054] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 5 mm, and then mixing them uniformly to form a mixture;

[0055] (3) Mix the mixture, manure, EM bacteria and water at a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 50°C for 35 hours to obtain the first raw material;

[0056] Then raise the temperature of the first raw material to 90°C, keep it warm for 10 minutes, and then cool down to 30°C;

[0057] (4) The first raw material a...

Embodiment 3

[0067] A kind of preparation method for reducing the organic fertilizer of heavy metal lead in soil, it is characterized in that, comprises the steps:

[0068] (1) At a temperature of 60°C, dry the wheat straw, wheat straw, corngrass and emperor bamboo grass until the moisture content of the wheat straw, wheat straw, corn grass and emperor bamboo grass is ≤20%;

[0069] Wherein, the mass ratio of wheat straw, wheat straw, corn grass and emperor bamboo grass is 1:1:2:3;

[0070] (2) Grinding the dried wheat straw, wheat straw, corngrass, and emperor bamboo grass into particles with a particle size of 9 mm, and then mixing them uniformly to form a mixture;

[0071] (3) Mix the mixture, manure, EM bacteria and water in a mass ratio of 10:1:0.1:1, and then ferment anaerobically at a temperature of 52°C for 31 hours to obtain the first raw material;

[0072] Then raise the temperature of the first raw material to 90°C, keep it warm for 7 minutes, and then cool it down to 25°C;

...

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Abstract

The invention discloses a preparation method of organic fertilizer for reducing heavy metal lead in soil. The selected wheat straw, dracocephalum moldavica and pennisetum hydridum are high in yield and low in price, can provide a large quantity of plant fibers and can effectively immobilize soil nutrients; secondarily, the wheat straw, dracocephalum moldavica and pennisetum hydridum are mixed withEM bacteria and barnyard manure to form nutrients easy to absorb by plants with an anaerobic fermentation method, and the yield of crops can be greatly increased; thirdly, zeolite, fly ash, coal cinder and kaolin are matched with one another and can effectively adsorb metal lead in soil to reduce the content of lead in the soil.

Description

technical field [0001] The invention relates to a passivation heavy metal, in particular to a method for preparing an organic fertilizer for reducing heavy metal lead in soil. Background technique [0002] With the rapid development of economy and industry, the extensive application of chemical fertilizers and pesticides, the exploitation of mines and oil fields, and the discharge of enterprises such as petrochemical, pesticide and pharmaceutical production have led to the continuous deterioration of soil pollution. Among them, heavy metal pollution in soil has become a problem that cannot be ignored. These heavy metal pollution will not only lead to crop yield reduction, but also remain in agricultural products, and then enter the human body, causing major hidden dangers to people's health. Contents of the invention [0003] It is an object of the present invention to solve at least the above-mentioned problems and to provide at least the advantages which will be describe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05D1/00C05G3/00C05G3/80C05G5/12C05D9/00C05F9/04C05F11/00C05F11/02C05F11/08
Inventor 林良兵
Owner 林良兵
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